CVE-2020-2296: CSRF vulnerability in Jenkins Shared Objects Plugin
Summary
CVE-2020-2296: CSRF vulnerability in Jenkins Shared Objects Plugin. Affects org.jenkins-ci.plugins:shared-objects versions < 0.44. No fix is published. How to fix ↓
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Background
Jenkins Shared Objects Plugin is a Maven package that provides functionality for configuring shared objects in Jenkins. It allows users to define reusable objects that can be shared across multiple Jenkins jobs. These shared objects can include configurations, scripts, and other resources. The plugin simplifies the management and reuse of these objects, enhancing the efficiency and consistency of Jenkins workflows.
Vulnerability Detail
A cross-site request forgery (CSRF) vulnerability has been identified in Jenkins Shared Objects Plugin version 0.44 and earlier. This vulnerability enables attackers to perform unauthorized configuration changes to shared objects. By tricking an authenticated user into visiting a malicious website or clicking on a specially crafted link, an attacker can exploit this vulnerability to modify shared objects without the user's knowledge or consent. The impact of this vulnerability can range from unauthorized access to sensitive information to disruption of Jenkins workflows.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable the Jenkins Shared Objects Plugin until the vulnerability is fixed. This can be done by navigating to the Manage Plugins section in Jenkins, selecting the Installed tab, locating the Jenkins Shared Objects Plugin, and disabling it. However, disabling the plugin will prevent the use of shared objects in Jenkins workflows, so it should only be considered as a short-term solution.
Conclusion
In conclusion, the CSRF vulnerability in Jenkins Shared Objects Plugin poses a moderate risk to Jenkins instances. It allows attackers to modify shared objects, potentially leading to unauthorized access or disruption of workflows. To mitigate this vulnerability, it is crucial to update the plugin to version 0.45 or later. Users can also use the Vulert Playground to check if their Jenkins instance is affected. For further support and assistance with vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for org.jenkins-ci.plugins:shared-objects →
FAQ
The vulnerability allows attackers to modify shared objects in Jenkins, potentially leading to unauthorized access to sensitive information or disruption of Jenkins workflows.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your Jenkins instance is affected by this vulnerability. Simply input your pom.xml file and the playground will provide real-time alerts for open-source vulnerabilities, including this CSRF vulnerability.
Yes, a fix is available in Jenkins Shared Objects Plugin version 0.45 and later. It is recommended to update the plugin to the latest version to mitigate the CSRF vulnerability.
No, disabling the Jenkins Shared Objects Plugin will prevent the use of shared objects in Jenkins workflows. It is advisable to re-enable the plugin once it has been updated to a fixed version.
At the time of this advisory, there are no known public exploits for this vulnerability. However, it is important to promptly update the plugin to the latest version to prevent potential exploitation.
